reynolds



(No Model.)

T. J. REYNOLDS.

STEAM GENERATOR.

Patented Mar. 19, 1889 Wwaves,

(No Modl.) I 2 Shets-Sheet 2.

T. J. REYNOLDS.

STEAM GENERATOR. No. 399,781. Patented Mar. 19, 1889.

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THOMAS J. REYNOLDS, OF BROOKLYN, NEW' YORK, ASSIGNOR OF ONE-HALF TO FRANCIS NOLAN, OF SAME PLACE.

STEAM GENERATOR.

SPECIFICATION forming part Of Letters Patent No. 399,781, dated. March 19, 1889.

Application filed October 17, 1887. Renewed February 14, 1889. Serial No. 299,925. (No model.)

To all whom, it may concern.-

Be it known that I, THoMAs J. REYNOLDS, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Steam-Generators, of

which the following is a specification.

In my Letters Patent No. 324,596, dated August 18, 1885, I have shown and described a heater within a steam-generator, which con- IO sists of a shell, casing, or large tube arranged within the generator below the liquid-level, with which the feed-pipe is connectedsay at one endand a pipe extending from the heater, shell, or casing-say at the other end 1 5 int-o the generator, for delivering liquid into the generator from the heater, shell, or casing. The purpose of this construction is to subject the feed-water to a preliminary heating in the heater, shell, or casing, or large tube, before it is delivered to the interior of the generator proper, whereby the water will in the heater be raised to such a temperature as will cause it to deposit all or nearly all of its impurities before it passes to the steam-gen erator proper,

and by these means the interior of the generator proper may be kept comparatively clean and the water free from all its impurities while it is in the heater. Obviously, however, the placing of such a heater as above 0 described within an ordinary steam-generator already in use would be expensive and inconvenient; and the object of my present invention is to secure substantially the same advantages by tubes or pipes, which may be 3 5 placed in position in the setting of an ordinary generator at anytime after it is in use or when the generator is first set in position.

In carrying out my present invention I place beneath the steam-generator proper and exposed to the heat of the furnace a heater consisting of one or more tubes or pipes exposed at the ends, so that the pipe or pipes may be readily cleaned out by an ordinary flue-scraper whenever it is desired to remove the incrustation from them. A feed-pipe enters the heater at one end, and a pipe also leads from the heater for communication with the generator, whereby the water after being heated and caused to deposit sediment and impurities in the heater passes to the gener- 5o ator. I prefer to form the heater of two 1011- gitudinal tubes and a cross-tube connecting them near one end, the ends of all said tubes being exposed to enable them to be readily cleaned, and the feed-pipe then communicates 5 5 with one end of one of said longitudinal tubes, and from the corresponding end of the other longitudinal tube a pipe leads for communication with the steam-generator. This pipe which leads to the'steamgenerator usually 6c passes first to the receiving-chamber of a filter, and from the delivery-chamber of the filter leads to the generator; and I also provide outletcocks in the receiving and delivery chambers of the filter, whereby provision for cleaning the filter or for a surface blow-oft" for the generator is afforded, as will be here inafter described.

The invention consists in novel combinations of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is alongitudinal section of a generator embodying my invention. Fig. 2 is a horizontal section through the setting or below the generator proper, but illustrating clearly the pipes which form the heater. Fig. 3 is a transverse section upon the plane of the dotted line 00 at, Fig. 1; and Fig. 4: is a section similar to Fig.

1, showing the water-pipe leading from the So heater directly to the generator, the filter being dispensed with.

Similar letters of reference designate corre sponding parts in the several figures.

A designates an ordinary multitubular 8 5 steam-generator, which is supported in the usual way i n a setting comprising side walls, B,

a rear wall, B, and a front wall, B

l3 designates the bridge-wall, and O the furnace wherein is arranged the grate c. The heater which I employ consists of one or more tubes of comparatively large size arranged beneath the generator and in such a position as to be exposed to the heat of the furnace; and, as here represented, the heater consists of two longitudinal tubes, D, arranged near opposite sides of the furnace, and a crosstube, D, which is arranged, as here shown,

immediately behind the front wall, B and extends across'between and also from the for removing the heads or plates cl, whereby they are closed, and when the opposite ends of any one of the tubes are thus opened an ordinary flue scraper or cleaner can be passed through the tube and all sediment and incrustation removed from it.

e designates the feed pipe, which leads from a pump or any other suitable source to one end of one of the longitudinal tubes D, and from the corresponding end of the opposite longitudinal tube leads a delivery-pipe, e, which is in communication with the interior of the generator A.

As here shown in Figs. 1, 2, and 3, the pipe 6 delivers directly into the receiving-chamberf of a filter, F, and after passing through the filtering medium f the water reaches a delivery chamber, f and thence passes through the pipe 6 to the generator. As here represented, the inner end of the pipe 6 within the generator is provided with a flaring mouth, 6 and is arranged at just about the water-level, so that it will serve as a surface blow-off, if desired, as hereinafter described.

The water which enters the heater through the pipe 9 becomes heated therein to a high degree, whereby it is caused to deposit all impurities which will produce incrustation, and thence passes to the filter F and to the steam-generator. In some cases it will not be necessary to employ the filter F, and the feed-pipe e, passing from the heater, will then lead directly to the boiler, as is shown in Fig.

4. I have here shown the receiving and de livery chambers f f 2 of the filter as provided with outlet-cocks g g; but I may provide the pipe 6 with a cook, 9 which may be shut off when it is desired. Now we will suppose that it is desired to clean the filter F. I first shut off the cook 9 thereby retaining in the heater the water which is required to fill the tubes D D, and I then open the outlet-cock g. From the pipe 6 under pressure, water will pass downward and backward through the filtering medium f and out at the cock g, thereby cleansing the filter. Suppose it be desired to clean the heater without letting all the water out of the generator proper and while steam is still up. I first close the cook 9 stop the feed-water through the pipe 6, and I then remove the heads from the tubes D D and thoroughly clean them out, after which the heads are replaced and the cocks opened, so as to provide for feed in the normal way. By opening the outlet-cock g from the delivcry-chamber f of the filter I provide for the discharge from the water-level in the steamgenerator A to the delivery-chamber f and thence through the cock 7, and thus afford a surface blow-off.

My present invention, although probably not more effective than that set forth in my former patent, where it is desired to embody my invention in new generators, is very much more desirable where it is desired to apply the invention to steam-generators already in use.

As shown in Fig. 4, the pipe 6, through which water is delivered from the heater, communicates directly with the interior of the generator. In the construction shown in Figs. 1, 2, and 3 the pipe 6 is no less in communication with the interior of the generator A because it is connected indirectly therewith or through the filter F. It is also a fact that the tube D, with one end of which the feed-pipe e is connected, has its opposite end connected with the receiving-chamber f of the filter, although such a connection is here made indirectly through the cross-tube D, the other tube, D, and the pipe 6, leading therefrom.

I am aware that prior to my invention the feed-water has been heated before entering a steam-generator by passing it through pipes arranged about the boiler, so as to be subj ected to heat therefrom, and notably by pass ing it through a series of return pipes and bends, as shown in the patent to Earle et at, No. 369,697, dated September 13, 1887. When feed-water is thus heated before being passed to a steam-generator, it deposits directly in the heater a greater part of those impurities which would produce incrustation if allowed to pass to the generator, and hence it is of the utmost importance that any heater for such use should have ample provision for readily cleaning from it the sediment deposited in it. Such provision is furnished in the greatest degree by my construction. The tubes D are straight, as is also the cross-tube D, and the ends of all these tubes are exposed beyond the setting of the generator, so that by removing the heads with which they are provided a tube brush or scraper may be passed through them and all the foreign matter removed from them.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with a steam-generator, of a heater consisting of longitudinal tubes and a cross-tube connecting them near their end, said tubes being exposed to the heat of the furnace and having their ends exposed for cleaning, a feed-pipe connected with one end of the one longitudinal tube and a pipe leading from the corresponding end of the other longitudinal tube for delivering water from the heater, substantially as herein described.

2. The combination, with a steam-generator, of a filter, F, a feed-water heater outside the generator, exposed to the heat of the generator-furnace and comprising a straight tube, as D, having its ends exposed beyond the brick setting of the generator to afford facility for cleaning, pipes leading from one end of said tube to the receiving-chamber of the filter and from the delivery-chamber of the filter to the generator at about the Waterline therein, and outlet-eocks in the receiving and delivery chambers of the filter, whereby provision for cleaning the filter or IO blowing off the generator from the surface is afforded, substantially as herein described.

THOS. J. REYNOLDS. Witnesses:

C. HALL, FREDK. HAYNES. 

